Round cake server



FIG. 1 is a side perspective view of a round cake server showing my new design;

FIG. 2 is an end view taken from the right side of FIG. 1;

FIG. 3 is a top plan view;

FIG. 4 is an end view taken from the left side of FIG. 1;

FIG. 5 is a side view; and,

FIG. 6 is a bottom plan view. 

The ornamental design for a round cake server, as shown and described. 